Joseph dekuy



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J. DERRY GUN SIGHT Filed 0015. 21, 1924 inuenfar c1. Jar/ Patented Nov. 2, 1926.

STATE JOSEPH DERBY, OF LACORDAIRE, SASKATCHEWAN, CANADA.

GUN SIGHT.

Application filed October 21, 1924. Serial No. 744,936.

The majority of gun sights now in use, that is, those which are adjustable to long ranges, are operable by manually manipulated levers or similar elements to move the sight from what may be termed a pointblank position to one of several higher positions for taking care of the elevation in long range shooting.

The present invention is one wherein the sight member is under tension of some suitable means, such as a spring, compressed air, rubber or other force, preferably spring action, in conjunction with means for retain ing the sight member in the desired position. It is the aim to release this means by finger pressure, thereby relying upon the force to automatically raise the sight member.

Another purpose is to provide, in a gun sight, a construction by which the sight member is adjustable without removing the eyes off the game.

A further purpose is to provide means, such as will permit the sight member to be returned to the pointblank position with rapidity, for instance, by simply pressing upon the top of the sight member which will slide back to normal or pointblank position and thereby retained in place.

A still further purpose is the provision of means to permit the sight member to freely adjust without binding and yet provide a close fit for the sight member.

It is to be understood that the particulars herein given are in no way limitative and that, while still keeping within the scope of the invention, any desired modifications of detail and desired proportions may be made in the apparatus according to the circumstances.

The invention comprises further features and combinations of parts to be hereinafter set forth, shown in the drawings and claimed.

In the drawings:

Figure 1 is a view in perspective of the improved gun sight constructed in accordance with the invention.

Figure 2 is a vertical sectional View through the same, showing the means for retaining the sight member in its normal or pointblank position and also in its uppermost position for long ranges.

Figure 3 is a vertical sectional view at right angles to Figure 2, showing the means for holding the sight member in its intermediate positions.

Figure 4 is a cross sectional View through the shell, showing the relation of the various retalning means.

Figure 5 is a section on line 5-5 of F igure 4:.

Referring to the drawings, 1 designates the base of the gun sight which may be mounted on the gun in any suitable manner, preferably by means of a plate 2 which has ears 3 between which the base 1 is pivotally mounted. The plate may be secured to the gun by suitable fastening means 4. The base 1 has an upward reduced extension 5 to which a shell 6 is threaded. The shell may be any suitable height and may be any shape in cross sectional area, preferably rectangular.

A stem 7 is threaded, as at 8, into the reduced extension 5. It will be noted that the stem 7, the shell 6 and the base 1 are relatively fixed and solid. The shell 6 has a chamber 9 which is preferably rectangular in cross sectional area and is adapted for the reception of the sight member 10 which has a central bore 11 for the reception of the stem 7. The bore 11 is counterbored, as at 12, to provide space for the reception of a coil spring 13 which is interposed between the shoulder 14. at the inner end of the counterbore and the upper face of the reduced extension 5, the spring acting to force the sight member 10 upwardly.

The sight member 10 has upper and lower sets of recesses 15 and 16 and intermediate sets of recesses 17 and 18. The latter sets are in positions at right angles to the former sets. These recesses are of angular form and are adapted for the reception of the spring catches 19 and 20 and 21 and 22. The spring catches 19 enter the lower set of recesses, the spring catches 20 enter the uppermost recesses while the spring catches 21 and 22 are adapted to enter the intermediate recesses 17 and 18, respectively.

The walls of the chamber 9 at points coincident with the several sets of recesses have opposite openings 23, 24:, 25 and 26. The openings 23 are opposite the recesses 15 while the openings 26 are opposite the recesses 16 and the openings 24 and 25 are opposite the intermediate recesses, respectively. The opposite walls of the chamber of the shell also have upper and lower recesses 27 and 28 and intermediate recesses 29 and 30 which are adjacent and merge into the openings 24 and 25, respectively, while the recesses 27 and 28 merge into the openings 23' and 26.

The various springs 19 and 20 and 21 and 22 are secured to the sight member 10,as at 31, so that each will enter its respective recess and conform to the bottom thereof when it is depressed. The springs 19 and 20 and 21 and 22 have heads 32, 33, 34 and 35 which are adapted to enter the openings 23 to 26 inclusive for holding the sight member in different positions. Secured to the opposite walls of the chamber of the shell, as at 36, are springs 37, 38, 39 and 40 which have buttons 41, 42, 43 and 44 which normally en-' gage with the openings 23 to 26, inclusive.

When the sight member is in its lowermost or pointblank position, the heads or shoulders 32 are in engagement with the should'ers formed by openings 23 and when the sight member is in its next raised position,

the heads 33 engage With the shoulders formed by openings 24. When the sight member is in a third position, the heads 34 sight member 10 to force it back toits normal or pointblank position.

It is possible to depress the uppermost buttons and permit the sight member to raise to a still further position and in this case the member is limited in this still further movement by means of a safety catch 45 carried by the sight member which is similar in construction to the several other spring catches heretofore described. This spring catch 45, when depressed, enters a recess 46 in the sight member. The wall of the shell has an opening 47 immediately adjacent the head of thesafet-y catch for the reception of a sharp instrument or tool for the purpose of depressing the safety catch in case it is found necessary to remove the sight member 10 for repairs.

The invention having been set forth, what is claimed is:

A gun sight including a shell, a sight member operable therein and provided with tensioning means to raise it from a pointblank or normal lowered position to long range positions, means for retaining the sight member in different adjusted positions,

manual means for releasing said retaining means, and safety means for retaining the sight member against leaving the shell when one of said releasing means is operated to release the sight member from its uppermost sighting position, said safety means being operable to remove the sight member.

In testimony whereof he affixes his signature. Y

JOSEPH DERBY. 

